/*
 * Copyright (C) 2008 Universidade Federal de Campina Grande
 *  
 * This file is part of OurGrid. 
 *
 * OurGrid is free software: you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License as published by the Free 
 * Software Foundation, either version 3 of the License, or (at your option) 
 * any later version. 
 * 
 * This program is distributed in the hope that it will be useful, but WITHOUT 
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
 * for more details. 
 * 
 * You should have received a copy of the GNU Lesser General Public License 
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 * 
 */
package org.ourgrid.discoveryservice.controller;

import java.util.List;

import org.ourgrid.common.interfaces.DiscoveryService;
import org.ourgrid.discoveryservice.DiscoveryServiceConstants;
import org.ourgrid.discoveryservice.dao.DiscoveryServiceDAO;

import br.edu.ufcg.lsd.commune.api.FailureNotification;
import br.edu.ufcg.lsd.commune.api.InvokeOnDeploy;
import br.edu.ufcg.lsd.commune.api.RecoveryNotification;
import br.edu.ufcg.lsd.commune.container.logging.CommuneLoggerFactory;
import br.edu.ufcg.lsd.commune.container.servicemanager.ServiceManager;
import br.edu.ufcg.lsd.commune.identification.DeploymentID;
import br.edu.ufcg.lsd.commune.identification.ServiceID;

public class DiscoveryServiceNotificationController {

	private ServiceManager serviceManager;

	@InvokeOnDeploy
	public void init(ServiceManager serviceManager) {
		this.serviceManager = serviceManager;
	}
	
	@FailureNotification
	public void dsIsDown(DiscoveryService discoveryService, DeploymentID deploymentID) {
		DiscoveryServiceDAO discoveryServiceDAO = serviceManager.getDAO(DiscoveryServiceDAO.class);
		discoveryServiceDAO.removeFromNetwork(deploymentID.getServiceID());
		
		CommuneLoggerFactory.getInstance().gimmeALogger( this.getClass() ).info( "DiscoveryServiceNotificationController.dsIsDown() ");
	}
	
	@RecoveryNotification
	public void dsIsUp(DiscoveryService discoveryService, DeploymentID deploymentID) {
		DiscoveryServiceDAO discoveryServiceDAO = serviceManager.getDAO(DiscoveryServiceDAO.class);
		boolean modified = discoveryServiceDAO.putDiscoveryService(deploymentID.getServiceID(), discoveryService);
		
		DiscoveryService myDiscoveryService = (DiscoveryService) serviceManager.getObjectDeployment(
				DiscoveryServiceConstants.DS_OBJECT_NAME).getObject();
		
		discoveryService.getDiscoveryServices(myDiscoveryService);
		
		List<DiscoveryService> updatedDiscoveryServices = discoveryServiceDAO.getDiscoveryServices();
		if (modified){
			for (DiscoveryService updateDiscoveryService : updatedDiscoveryServices) {
				ServiceID serviceID = serviceManager.getStubDeploymentID(updateDiscoveryService).getServiceID();
				if (serviceID.equals(deploymentID.getServiceID()) || 
						serviceID.equals(serviceManager.getMyDeploymentID().getServiceID())){
					continue;
				}
				discoveryService.hereAreDiscoveryServices(discoveryServiceDAO.getDiscoveryServicesIDs());
				CommuneLoggerFactory.getInstance().gimmeALogger( this.getClass() ).info( 
						"DiscoveryServiceNotificationController.dsIsUp() \n" +
						"Table before: "+ discoveryServiceDAO.getDiscoveryServicesAddresses() +
						"\nTable after: " + discoveryServiceDAO.getDiscoveryServicesAddresses());
			}
		}
	}
}
